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These files were pulled from the 1.6.3 release tarball. This new version builds against OpenSSL version 1.1 which will be the default in the new Debian Stable which is due to be released RealSoonNow (tm).
263 lines
8.6 KiB
C
263 lines
8.6 KiB
C
/*
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* daemon/stats.h - collect runtime performance indicators.
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*
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* Copyright (c) 2007, NLnet Labs. All rights reserved.
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*
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* This software is open source.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of the NLNET LABS nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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*
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* This file describes the data structure used to collect runtime performance
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* numbers. These 'statistics' may be of interest to the operator.
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*/
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#ifndef DAEMON_STATS_H
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#define DAEMON_STATS_H
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#include "util/timehist.h"
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#include "dnscrypt/dnscrypt_config.h"
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struct worker;
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struct config_file;
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struct comm_point;
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struct comm_reply;
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struct edns_data;
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struct sldns_buffer;
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/** number of qtype that is stored for in array */
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#define STATS_QTYPE_NUM 256
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/** number of qclass that is stored for in array */
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#define STATS_QCLASS_NUM 256
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/** number of rcodes in stats */
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#define STATS_RCODE_NUM 16
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/** number of opcodes in stats */
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#define STATS_OPCODE_NUM 16
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/** per worker statistics */
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struct server_stats {
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/** number of queries from clients received. */
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size_t num_queries;
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/** number of queries that have been dropped/ratelimited by ip. */
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size_t num_queries_ip_ratelimited;
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/** number of queries that had a cache-miss. */
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size_t num_queries_missed_cache;
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/** number of prefetch queries - cachehits with prefetch */
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size_t num_queries_prefetch;
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/**
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* Sum of the querylistsize of the worker for
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* every query that missed cache. To calculate average.
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*/
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size_t sum_query_list_size;
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/** max value of query list size reached. */
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size_t max_query_list_size;
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/** Extended stats below (bool) */
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int extended;
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/** qtype stats */
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size_t qtype[STATS_QTYPE_NUM];
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/** bigger qtype values not in array */
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size_t qtype_big;
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/** qclass stats */
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size_t qclass[STATS_QCLASS_NUM];
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/** bigger qclass values not in array */
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size_t qclass_big;
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/** query opcodes */
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size_t qopcode[STATS_OPCODE_NUM];
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/** number of queries over TCP */
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size_t qtcp;
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/** number of outgoing queries over TCP */
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size_t qtcp_outgoing;
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/** number of queries over IPv6 */
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size_t qipv6;
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/** number of queries with QR bit */
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size_t qbit_QR;
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/** number of queries with AA bit */
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size_t qbit_AA;
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/** number of queries with TC bit */
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size_t qbit_TC;
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/** number of queries with RD bit */
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size_t qbit_RD;
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/** number of queries with RA bit */
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size_t qbit_RA;
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/** number of queries with Z bit */
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size_t qbit_Z;
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/** number of queries with AD bit */
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size_t qbit_AD;
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/** number of queries with CD bit */
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size_t qbit_CD;
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/** number of queries with EDNS OPT record */
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size_t qEDNS;
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/** number of queries with EDNS with DO flag */
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size_t qEDNS_DO;
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/** answer rcodes */
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size_t ans_rcode[STATS_RCODE_NUM];
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/** answers with pseudo rcode 'nodata' */
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size_t ans_rcode_nodata;
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/** answers that were secure (AD) */
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size_t ans_secure;
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/** answers that were bogus (withheld as SERVFAIL) */
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size_t ans_bogus;
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/** rrsets marked bogus by validator */
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size_t rrset_bogus;
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/** unwanted traffic received on server-facing ports */
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size_t unwanted_replies;
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/** unwanted traffic received on client-facing ports */
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size_t unwanted_queries;
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/** usage of tcp accept list */
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size_t tcp_accept_usage;
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/** answers served from expired cache */
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size_t zero_ttl_responses;
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/** histogram data exported to array
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* if the array is the same size, no data is lost, and
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* if all histograms are same size (is so by default) then
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* adding up works well. */
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size_t hist[NUM_BUCKETS_HIST];
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/** number of message cache entries */
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size_t msg_cache_count;
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/** number of rrset cache entries */
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size_t rrset_cache_count;
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/** number of infra cache entries */
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size_t infra_cache_count;
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/** number of key cache entries */
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size_t key_cache_count;
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#ifdef USE_DNSCRYPT
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/** number of queries that used dnscrypt */
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size_t num_query_dnscrypt_crypted;
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/** number of queries that queried dnscrypt certificates */
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size_t num_query_dnscrypt_cert;
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/** number of queries in clear text and not asking for the certificates */
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size_t num_query_dnscrypt_cleartext;
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/** number of malformed encrypted queries */
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size_t num_query_dnscrypt_crypted_malformed;
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#endif
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};
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/**
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* Statistics to send over the control pipe when asked
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* This struct is made to be memcpied, sent in binary.
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*/
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struct stats_info {
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/** the thread stats */
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struct server_stats svr;
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/** mesh stats: current number of states */
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size_t mesh_num_states;
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/** mesh stats: current number of reply (user) states */
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size_t mesh_num_reply_states;
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/** mesh stats: number of reply states overwritten with a new one */
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size_t mesh_jostled;
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/** mesh stats: number of incoming queries dropped */
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size_t mesh_dropped;
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/** mesh stats: replies sent */
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size_t mesh_replies_sent;
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/** mesh stats: sum of waiting times for the replies */
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struct timeval mesh_replies_sum_wait;
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/** mesh stats: median of waiting times for replies (in sec) */
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double mesh_time_median;
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};
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/**
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* Initialize server stats to 0.
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* @param stats: what to init (this is alloced by the caller).
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* @param cfg: with extended statistics option.
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*/
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void server_stats_init(struct server_stats* stats, struct config_file* cfg);
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/** add query if it missed the cache */
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void server_stats_querymiss(struct server_stats* stats, struct worker* worker);
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/** add query if was cached and also resulted in a prefetch */
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void server_stats_prefetch(struct server_stats* stats, struct worker* worker);
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/** display the stats to the log */
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void server_stats_log(struct server_stats* stats, struct worker* worker,
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int threadnum);
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/**
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* Obtain the stats info for a given thread. Uses pipe to communicate.
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* @param worker: the worker that is executing (the first worker).
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* @param who: on who to get the statistics info.
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* @param s: the stats block to fill in.
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* @param reset: if stats can be reset.
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*/
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void server_stats_obtain(struct worker* worker, struct worker* who,
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struct stats_info* s, int reset);
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/**
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* Compile stats into structure for this thread worker.
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* Also clears the statistics counters (if that is set by config file).
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* @param worker: the worker to compile stats for, also the executing worker.
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* @param s: stats block.
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* @param reset: if true, depending on config stats are reset.
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* if false, statistics are not reset.
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*/
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void server_stats_compile(struct worker* worker, struct stats_info* s,
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int reset);
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/**
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* Send stats over comm tube in reply to query cmd
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* @param worker: this worker.
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* @param reset: if true, depending on config stats are reset.
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* if false, statistics are not reset.
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*/
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void server_stats_reply(struct worker* worker, int reset);
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/**
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* Addup stat blocks.
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* @param total: sum of the two entries.
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* @param a: to add to it.
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*/
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void server_stats_add(struct stats_info* total, struct stats_info* a);
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/**
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* Add stats for this query
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* @param stats: the stats
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* @param c: commpoint with type and buffer.
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* @param qtype: query type
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* @param qclass: query class
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* @param edns: edns record
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* @param repinfo: reply info with remote address
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*/
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void server_stats_insquery(struct server_stats* stats, struct comm_point* c,
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uint16_t qtype, uint16_t qclass, struct edns_data* edns,
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struct comm_reply* repinfo);
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/**
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* Add rcode for this query.
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* @param stats: the stats
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* @param buf: buffer with rcode. If buffer is length0: not counted.
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*/
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void server_stats_insrcode(struct server_stats* stats, struct sldns_buffer* buf);
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#endif /* DAEMON_STATS_H */
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